There is no reason that those interested in politics would not be interested in having a political debate via skype or phone call. Generally the purpose of a political debated is to show superior political knowledge and ideas to a constituency, in order to pick up votes on election day. The fact that so many today don't even watch television is reason enough for politicians to go to skype or telephone lines for political debate.
Although i would not personally be interested in having a political debate via Skype or phone call, there are many people who would love to do so. There are people who, believe it or not, love to argue politics. I do not know how many fights my family has gotten into because there are members of both political parties. Of course, each side just knows they are on the right side of every issue. It is really annoying! Can't we just talk about the weather?